Melting pot



Maf. 13g 1923. 1,448,529.

A. L. N. FLENIING.

MELTING POT.

FILED sEPT.27.1921.

A TTOR'NE Y.

Patented Mar. i3, 1.923.

usaran AUGUST L. N. FLEMING, OF LYNDHURST, NEW JERSEY.

MELTlNG- POT.

Application filed September 27, 1921. Serial No. 503,491.

To all whom tima-y concern.'

Be it known that I, AUGUST L. N. ELEM- ING, y a subject of the Republic ot'France, and a resident of Lyndhurst, in the county of Bergen and. State of New Jersey, have invented certain new and use-ful improvements in a Melting Pot, of which thefollowing is a full, clear, and exact speciiication.

This invention relates to a class or apparatus adapted to be used formali-ing metal printing type and the like.

ly invention hasv for its .object primarily to provide an apparatus or melting pot designed to be employedfor type, slugs, spacing bars and the like for printing purposes, and which is of a formv whereby air under pressure is used for causing molten metal tobe fed to suitable molds ma manner so that the metal Will be discharged 1n regulated fractional quantities or ina continuous stream so that spacing bars of long llengths as Well as various. forms ot type having smooth and even races may be made instead of the Abars irregular faces. The invention also contemplates the provision of a machine combining simplicity, .eHioiency and vdurability of con.- struction which is susceptible of being made for ready use in either small, medium or large printing establishments. These yadvantages are attained mainlyby 4providing apot which may be heated, and the interior of the pot may be dividedinto Chambers having regulated means for providing communication therebetween so that Ltype metalwhen melted may How through the chambers. Forms of the pot may be made h ayingfga supply-chamber, a feed chamber and a dis-V charge chamber Awith a regulated ,Outlet through which `the metal is `fed to appro.`

priatemolds when type andthe like are cast,v

and the feeding of the meta-l is accomplished by compressed air `delivered rinto lthe pot from a regulated source of supply.

Other v"objects of the invention are to provide al1-indicator for determining theqn-antity oi" melted metal in the chambers; and to provide a regulator for discharging-excess of air pressure `in the chambers.

Vith these 'and .other objects in view,-the invention will .be `hereinafter more fully described with referenceto theaccompanj ing drawing forming/ j part of this specilication in which similar .characters oif refercasting metal;

an d type having ence indicate correspondingparts in allthe views, and Willthen bepointedout in the claims at the .end ot the description.

In the drawing, .Figure :l iS lo .detail sectional vievvtairen throughy one formof 'typo Costing' machine embodying my loros: tion.

Fie'- 2 iS o Sootiooal View,v partly .in detail taken on the line -21-2 of Fig.-l,

Fie, 3 is on .enlarged .fragmentary rios. showing a sectional view, partly in detail, tali-en on the line 3T3 o tlgvl Il.

The apparatus has la potl() Which may be of any suitable shape and sise as Well as being made of metal so that the ypot maybe appropriately heated. The poohas a .hollow body part ll With an open top l2, The interior-of the body l1 may bo divided by a hollow or tubular pa-rtitiomas 1 3', into tivo chambers or compartments le, l5, and on the Wall of the chamber leoppositeto the chamber l5 may be ,another chamber 16 iyitlran open upper end y17, Zhen a form oi' the pot is Vmade having the three chambers the chamber 16 serves to receive lmoltentype metal, as 17a or pieces of type metal opbeing melted by heating` the pot, and the chamber 14C serves as a feed chamber, While Athe chamber 15 serves as a discharge chamber. The supply chamber 1G may be of alengthsofthat its upper portion extends considera-ble Ldistance above the chambers 14, 15, and at the lower end oi' this chamber as Well as projecting from. the chamber-14 ,is a lug` or casing, as 18, hai/'ing .a duct or -passag e l9 eXtending froml its outer endinto the feed chamber 14. Leading from ,the passage 4.19 'upwardly into tho bottom ofthe Supply chamber 16 is 1-passage 2 0, and also fro'mfth-e passage 19 is another passagel 2l Whichleads downwardly th/rough tl1e. ungclersi.d e Ot ,the lug- 18 yto serve as an Aenliaust outlet. ihe opening andnlosing ,the passage. 21 is controlled by a yalve, as 22, having a threaded stem, as 2,3,.iyhich .isscrewed intothe threaded outer end of V,the passage 1 9 ot ,the casing 18, and this stem isojfl a .lengthl so that lwhen revolved accordingly one of its ends will be movedinivardly ofthe passage 19 across ythe exhaust Ioutlet 21 aor ci1tting o ff the passage therethrough, and on the'outer end of the stem 23 may be la handle, as 24, to allow the valve to .be manually ope-rated. Projecting into theinterior ofthe Lopen end Aend maybe removably seated in the passage tween the eedchamber- 14 and the discharge the' enlarged part 42O`oith`e-valve casing 18 to open'and close e this pass'lz'ige,` rlhe of a length so some distance yabove the supply chamber 18,' 'and ony the upper endV of the stem may be'a stem 27 oithe valve 26 is that its upper end protrudes handle, as 28, 'for permitting the valve to be rotatablymoved downwardly to close the assage 20 of the valve casing 18 or vrotataly ladjusted upwardly to open this passage yofthe `'valve casing when 'it-is desired to open or'l 'close-communication 4'between the supply chamber 16 and the feed chamber 14. In the lower part oi' thetubular partition 13 ottheippot is a transverse passage orv opening 29 which provides communication bechamber 15, and this passage 29 is in communication with the passage of the partition 13. rl`he portion ot' the wall ot the discharge chamberl may be lengthwise enlarged, as at 30, and protruding outwardly from the upper part oi this enlargement may be an interiorly threaded boss or ring, as 31, having in the upper part ot its wall a lengthwise slot or opening, as 32. The lower end ot charge'chamber15 terminates in proximity to thev bottomet lthis'chai'nber, and in the enlarged part extending from its lower end to the'openingor passage ot the boss 31 is an inclined passage -33 which serves as an Y outlet for they -discharge ot moltenv type metal trom-the chamber 15. The opening and closing of the outlet 33 'is controlled by a valve,as 34, which is preferably ot a 'form having a. stem, as'35, rotatably arranged in i stern 35 of the valve the bottom part of the (boss 31 Vof the enlarged part of the wall of the discharge ych'amber, and protruding laterally fromV the stem is a handle or lug 36which is movably disposed through the slot 32 ojt' the boss 31 for allowing the stem 35 of the valve34 to be lrotatably adjusted in the boss. The 34 is adj ustably4 held (Y in4 the boss 31 by an exteriorly threaded nipple or cap,as' 37, which is screwed in the lil) boss 31, and in the center of the tree end ot the nipple 37 is a discharge hole o'r opening vLeading from the openingSS through s .thestem l35 of the valve 34v is a passage 39 which is arranged as well as being that its outer end may be'moved into and out of' register with 33 of' the discharge chamber '15 when .the

' ting the feed ol y and ady justable in the threaded sleeve 25 is a valve, as'26. The valve or cap 3() of the wall o't the dis` formed so the v passage or ,outletv valve 34 is accordingly rotated for permitvv the molten metal or for cutting-off the feeding of: the metal. 1

The tubular partition 13 of the chambered pot 10 is of a height sothat 'its upperv end terminates lat the opening or mouth 12 of the pot, and on this opening of thev pot is a cover 40. The cover preferably to the edge or" the opening or mouth oi? the pot. Extending interiorly ot the cover- 40 from an opening in its .center is an interiorly threaded sleeve or boss, as 44, having its passage in register with the passage of the tubulary partition 13. Adapted to open-and close the passage -29 of the partition" 13 is a valve `ior `cutting-off. and allowing the flow ot melted metal `trom'theteed chamber 14 to the discharge chamber 15, and this valve 45 is preferablytapered downwardlyas well as beingrotatably seated in a tapered recess46 arranged across'the passage 29 of the partition 13. An opening 47 is provided transversely through the valve 45 forv being moved into and out of registerwith the passage 29 when the valve isrotated accordingly so that closed, and

lower end of a stem or bar, as48,` which' movably' extends upwardly in land through the tubular partition 13 andv through the sleeve 44' of the cover 40so that the yupper end ot Vthe stem protrudes some distance above the cover. The stem 48 of the valvey 40 of the pot 10 has a flat top 41 with a depending `flange42 which isremovably bolted, at 43,

the passage'may be opened and I this valve is provided on the.

icc f 45 may be heldin accurate rotatableiposition by a bushing, as in the threaded sleeve "n'the 'form of. a pipe e' 49,- which isscrewed 44 otv the cover 40,- and ong-the upper partotl the stem 48 is a; handle, as 50, to allowthe stem and the-valve the forni oi a pipe havhaving its lower end held, vat 54, in an open` ing in the cover, and this pipe is likewise s bent insomewwhatthe'shape of an inverted.`

L so that itsv second end'terminates in spaced .relation to the second end of the-inlet pipe 51. pipes 55 having an leading into this casing betweenA the pipes 51 and 53 is an intake pipe, as 56', whiclivmay be connected to an aircompressor or other source of compressed air supply fory delivery into the ycasing pipes 51, 53 and into the chambers14v and rl`he second ends of both offth'e inlet 51 and 53 i v15 of the pot 10. In 'the casing 55 in spaced 55, through the inlet',

lead into a circular casing ,v open lower 'end 55a,` and also the feed chamber 14 for forcing Y pressed air to be admitted intothe justingthe valve 26 to close leading from the bottom of l the passage 29. rlhe valve proximityto the inlet pipe 51is an air outlet, as 57, and the interior of the casing 55 is preferablyl tapered in an outward iiared fashiony toward its open lower end 55a.

Held on the upperend of the stem 48 of the valve 45 is another valve, as 58, which is rotatably seated inthe casing 55 for controlling the supply of compressed air fed through the intake pipe 56 and through the inlet pipes 51 and 53. rlhe valve 58 is ap*- proximately semi-circular of a size slightly larger than one-half the diameter of the Lcasing 55 so that when rotatably adjusted aocordingly the intake pipe 56 and the inlet pipe 53 will be open with the interior of the casing 55, as shown in F ig. 2. r1`he inlet pipe 51 and the air outlet 57 will then be cutoff. Another part of the valve 58 is cutaway, as at 59, so that by rotating the valve reverseljy the inlet pipe 51 and the intake pipe 56 will be open with the interior of the casing, while the inlet pipe 53 and outlet 57 will be cut-oil'.

The machine is suitably heated after adthe passage the supply chainber 16 and following putting into this chamber the required quantity of type metal. The outlet 21 may be opened by adjusting the valve 22 accordinglyto exhaust all excess of air pressure in the feed chamber 14 through the passage 19 and outlet 21. The valve 22 is then readjusted to close theoutlet 21, and the valve 26 is also readjusted to open the passage 20 and 19 so that the molten metal from the supply chamber 16l will flow into the feed chamber after which the valve 26 is closed on its seat of the passage 26. The relative positions of the valves and 58 being Such that by accordingly rotatably adjusting the stem 48 by the handle 50 the valve'45 will be moved to open the passage 29 of the tubular partition 13 by the opening 47 of the valve 45 being registered with 58 will also be adjusted in thel casing so that the inlet 53 will be closed and so will be admitted into the inlet 56, into thev casing 55, and through the inlet pipe 51 into the molten metalto Lflow through the passage 29 and through the opening 47 of the valve 45 into the discharge chamber 15. The stem 48 is then ,rotatedto adjust the valve 58 for cutting-off .the air inlet pipe 51 as well as openu ing the air outlet or exhaust 57 to allow the air pressure in the feed chamber to escape, and with this adjustment of the valve 58 the inlets A56 and 53 will be opened to allow comdischarge chamber 15. By rotatably adjusting the valve 34 so that its passage 39 will be in register with the outlet passage 33the pressure of the air in the chamber 15 will cause the melted metal in the chamber 15 to be delivered into suitable molds for casting type,

r40 of the pot 10.

that compressed air slugs, or casting spacing bars of long or short lengths asr occasion requires sin-ce by using compressed air the metal may be fed in a continuous stream to molds for a desired period.

To determine the quantity of molten metal in the discharge chamber 15, an indicator', as 60, is provided. rlhis indicator is preferably of a form having' a hollow ball 61 arranged in the chamber 15 so as to doat onv the molten metal in this chamber, and this ball or float is held on the lower end of a stem or rod 62 which movably extends through an opening in the top ofthe cover The upper portion of the rod 62 is movably disposed in an inverted 1 transparent glass tube or casing, as 63, which is carried on the cover 40, and on this trans! parentV casing is provided a scale, as 64, divided into inches or other measurements so that with the rise or lowering ofthe level of the metal in the chamber 15 the upper end of the rod 62 of the oat 61 will indicate on the scale the in the chamber by the 'lioat 61 and rod 62 also rising or lowering with themetal.

ln order to maintain a given pressure of air in the discharge chamber v15 a. regulator, as 65, is provided. This regulator may consist of any well known type of safety valve, as 66, h aving an upwardly projecting bracket 67 to which is pivoted, at 68, one end of a lever bar, as 69, and this lever bar is fulcrumed, at 70, to the stem 71 of the'valve of the safety device. Adjustable on the second end part of the lever bar 69 is a weight 72 which is movable to regulate the action of the valve 'so that when the air in the chamber 15 is above a given pressure the safety valve will operate to discharge the excess air.

, ln the foregoingdescription, l have embodied the preferred form of my invention, but lf do not wish to be understood as limiting myself thereto, as l am aware that modifications may be made therein without departing from the principle or sacrificingA any7 of the advantages ofthis invention, therefore, I reserve to myself the right to` malte such changes as fairly fall within the scope thereof.

Having thus described my invention, l claim as new and desire to secure by Letters Patent* 1. A type casting machine, comprising a heatable pot with an outlet, and adapted to receive compressed air for causing the molten metal to be discharged in a continuous stream from the outlet, an indicator for quantity of metal i determinino the uantit of melted metal inl ZD I the pot, and means for discharging excess 'of lair pressure in the pot.

Athe outlet, land means for discharging eX- cess ofi air pressure in the pot.y

3..AL typel casting machine, comprising a heatable potwith a regulated outlet and hav-` ing an inlet adaptedtol receive a regulated supplyv of compressed air for causing molten ,y

' metal to be discharged vfrom the outlet by adapted to be of compressed air supply will be caused to l forced to be discharged in ajcontin'uous or j lregulated* stream` from the outlet bythe A ining" the quantity or' discharge chamber,

chambers, a number for let and havingv an the pressureoi the air, and a regulator for discharging*v excess of airA pressure in ythe ot. f p 4.k A type casting machine, comprising 'a heata'ble chamber with anoutlet for discharge of molten metal 'from the pot and having a valve controlledinlet for admitting air under pressurefor causing the ymetal to be fed from the outlet, an indicator 'for de* chambers adapted to receive compressed air metal to be fed and discharged romthe chambers, rand ,a regulator ordischargingv excess of air pressure in the chambers.

6. lA type casting machine, comprising heatable regulatedl communicating chambers adapted to receive afregulated -supply of air under :pressure for causing molten metal to flow'v in and be discharged from the chambers in regulated quantities, an infthe yquantity l of dicator for determining melted metal` in the chambers,v and a regu-p` lator for discharging excess sure in the chambers.

7 lA type casting valved `controlled heata'blel communicating `feeding molten metal and one forl discharging the metal, the discharge chamber having a `valve controlled outlet and one of the, feed chambers as well as the discharge chamber connected to a regulated source whereby the metal the chambers and of air presilowl in pressure of the air, an indicator for determmelted metal in the and a regulator for discharging excess of air pressurel in the dis charge chamber. i v y 8. An apparatus as characterized, comprising a heatcble pot with ai-regulated outregulated supply of compressed" air for causing moltenmetal to be discharged from the c ,outlet by thel pressure of the air, a heatable vsupply chamber .nov

on the pot, regulated means for feeding molten V metal to the pot, and a regulator fory discharging excess of air-pres-` sure in the pot. v'

9.' .ln a melting pot, a heatable chamber with an outlet for inlet for admitting of melted metal in.l

vfor causing moltenl machine, comprising having an inlet f supply chamber inlet adapted to receive a1 chamber.

discharge of molten metalV from the pot and having a valve controlled` Macnee causing the metal to be edfrom the outlet, a heatable supply chamber on the `pot, reg# ulated means vfor feeding molten metal from the supply chamber to the other chamber, an indicator Jfor determining the'quantity of melted metal in the chamber, and a regulator for-discharging eiice'ss of 'airfpressure in the chamber. *y c' l0. .lna melting pot, heatable communicatingv chambers adapted toreceive com` pressed air for `causing molten metal to be v:ted and vdischarged from thev chambers, valve controlled vmeans for regulating the communication between the chambers, andV 'a regulator forfdischarging excess oan' pressure in the chambers.r

ll. ln a melting' pot, 'heatable regulated communicating chambers adapted'to receive v'aregulated supply of a causing molten metal to flow in and be dis-l air under pressure for charged ,from the chambers' inregulated quantities, lan indicator for determining the quantity-ot melted metal inthe chambers, a regulator forv dischargingexc'ess of air pressure {inthe chambers, and a valve controlledv passage-way for exhausting air vin one'o'fthe chambers. y n 1 l2. ln av meltingpot,valved controlled` heatabl'e'communicating chambers, one for feeding molten metal-'and one for discharging the metal, the discharge chamber having a valve controlled outlet and one of thefeed chambers as well as the discharge chamber having an inlet," adapted to" be connected to a regulated source ,oitr compressed air supply whereby the metal will be causedto iowin the `chambersjand forcedto be discharged in a continuous or regulated stream from the outlet by the pressure 'ofthe air, an `'indica'ior for determining the quantity of melted metal in the ydischargechamber,v a regulator' for discharging Yexcess o'fair pressurein the discharge chamber, ka heatable'supply chamberon the pot, andregulated meansfor controlling the low of molten imetalffrom the to the feed chamber,

' 13. In 'a melting pot,A a heatable hollow body divided into a feed chamber anda discharge chamber, regulated means in the body providing communication between the chambers, regi'ilated means ,on thexbodyvpro'viding an outlet tothe discharge chamber, regulated means lalso on the body whereby air may be exhausted from the feed chamber, regulated` means' 'adapted kto connect thefbodyy to `a source` of compressed" air-'supply for" delivery of air atmintervals separately and 'directly into the feed chamber'and into the discharge chamber, and a regulator for discharging the excess.l of air pressure in the discharge ,14. vIn a melting pot, al `heatable'hollow bodydivided into a feed chamber and a discharge chamber, regulated meansin the body air underpressure for providing communication between the chambers, regulated means on the body providing an outlet to the discharge chamber, regulated means also on the body uf'hereby air may be exhausted from the reed chan ber, regulated means adapted to connect the body to source of compressed air supply for delivery of air at intervals separately and directly into the feed chamber and into the discharge chamber, an indicator for determining the quantity of contents in the discharge chamber and a regulator for discharging the excess of air pressure in the discharge chamber.

l5. ln a melting pot, a heatable hollow body divided into a supply chamber, a -feed chamber and a discharge chamber, regulated means in the body providing communication between the feed chamber and the discharge chamber7 regulated means providing communication between the supply chamber and the feed chamber, regulated means on the body providing an outlet to the discharge chamber, regulated means also on the body whereby air may be exhausted from the feed chamber, regulated means adapted to connect the body to a source of compressed air supply for delivery of air at intervals separately and directly into the feed chamber and into the discharge chamber, an indicator for determining the quantity of contents in the discharge chamber, and a regulator for discharging the excess of air pressure in the discharge chamber.

This specification signed and witnessed this 26th day of September, A. D. 1921.

AUGUST L. N. FLEMING. vWitnesses R. SCHACHNER, FREDERICK CRYER. 

